It’s very easy to check if your iPhone is unlocked or locked to a carrier with the following three quick and easy ways. You can check it through iPhone settings, using a second SIM card or with an instant iPhone IMEI SIM-Lock Check. The first 2 methods require the physical presence of the iPhone so you can review its settings and test other SIM cards. The third method has the ability to tell if your iPhone is unlocked remotely (anywhere in the world). Read more